RE: [PATCH 04/16] aacraid: Prevent E3 lockup when deleting units

[Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>]

> -----Original Message-----
> From: Johannes Thumshirn [mailto:jthumshirn@suse.de]
> Sent: Wednesday, February 15, 2017 12:20 AM
> To: Raghava Aditya Renukunta
> <RaghavaAditya.Renukunta@microsemi.com>; jejb@linux.vnet.ibm.com;
> martin.petersen@oracle.com; linux-scsi@vger.kernel.org
> Cc: Dave Carroll <david.carroll@microsemi.com>; Gana Sridaran
> <gana.sridaran@microsemi.com>; Scott Benesh
> <scott.benesh@microsemi.com>; dan.carpenter@oracle.com
> Subject: Re: [PATCH 04/16] aacraid: Prevent E3 lockup when deleting units
> 
> EXTERNAL EMAIL
> 
> 
> On 02/14/2017 09:44 PM, Raghava Aditya Renukunta wrote:
> > Arrconf management utility at times sends fibs with AdapterProcessed set
> > in its fibs. This causes the controller to panic and lockup.
> >
> > Fixed by failing the commands that have AdapterProcessed set in its flag.
> >
> > Signed-off-by: Raghava Aditya Renukunta
> <RaghavaAditya.Renukunta@microsemi.com>
> > Reviewed-by: David Carroll <David.Carroll@microsemi.com>
> > ---
> >  drivers/scsi/aacraid/commsup.c | 4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/drivers/scsi/aacraid/commsup.c
> b/drivers/scsi/aacraid/commsup.c
> > index 6220b47..f7a3bcb 100644
> > --- a/drivers/scsi/aacraid/commsup.c
> > +++ b/drivers/scsi/aacraid/commsup.c
> > @@ -522,6 +522,10 @@ int aac_fib_send(u16 command, struct fib *fibptr,
> unsigned long size,
> >
> >       if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned)))
> >               return -EBUSY;
> > +
> > +     if (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))
> > +             return -EINVAL;
> > +
> 
> As far as I can see the fib_xfer_state enum isn't an exported as an
> official ABI, so it's a good candidate (whole of aacraid.h actually) for
> the next round of camel case removals.
> 
> Anyways, this can wait:
> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>

I will put in the queue for the next set of patch submissions and chip away
 at it bit by bit.

Thank you,
Raghava Aditya Renukunta

> 
> --
> Johannes Thumshirn                                          Storage
> jthumshirn@suse.de                                +49 911 74053 689
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